Step 1 plug the point's x and y coordinates, and the slope, into the general equation y=mx+b.

y=mx+b becomes -9=(2/3)2 + b ---> -9 = 4/3 +b (subtract 4/3 from both sides):

-9 - 4/3 = b ---> -(27/3) -(4/3) = b = -(31/3)

Step 2 rewrite the general formula y=mx+b with the b found in step one, and the given slope (m).

y=(2/3)x-(31/3)
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